The answer is: IF A MACHINE IS EXPECTED TO BE INFALLIBLE, IT CANNOT ALSO BE INTELLIGENT.

Here’s how we solved it: This is a Vigènere Cipher, with the key of “TURING.” The answer originates from a quote by Turing in 1947.

We decoded the message using the following method:

Convert every letter a-z into a number 0-25, and for each letter at position x in the code (excluding spaces and punctuation): Message( x ) = Mod( Code( x ) – Key( Mod( x, Length( Key ) ) ), 26), where Code( x ) corresponds to the xth letter in the Code, etc.